Whole phrase repetitions:
This is when you repeat a phrase of more than one word (Example: “Why is … why is she here?”)

Single whole word repetitions:
This is when you repeat a single word (Example: “Where … where is the ball?”)

Interjections:
The addition of an extra word that doesn’t need to be inserted, usually “um”, “uh”, or “like” (Example: “What…um is your name?”)

Revisions:
When you change what you had originally started to say (Example: “What … when are they here?”)

Hesitations:
Leaving a long pause in your speech whilst thing about what to say a (Example: “I think you should ….. read this article”)

Repetition of single sounds:
Example: “b – bbbbbal”

Repetitions of syllables:
Example: “ba-baball”

Prolongation:
You will hear a sound being stretched or held as its being said (Example: “EEEEEEEven I know”)

Blocks:
This is when there is a stop in the flow of speech; you may see someones mouth move, but not hear any sound come out.

Extra movements while stuttering:
In addition to when people stutter, they may present with additional movements that are outside their control, like closing/blinking their eyes, lips/ cheek/jaw becoming very tense during stuttering, taping fingers or feet or head leaning.

Avoidance:
Some people who stutter avoid certain words or sounds because they know that they are more likely to stutter on them